Hard disagree with your disagree. A detailed 3D model could make it possible to zoom down to the gate level and show states propagating as the processor works

Hard disagree with your disagree. A detailed 3D model could make it possible to zoom down to the gate level and show states propagating as the processor works - optionally with timed animations showing actual physical propagation, as opposed to an idealised logical model. And then up to module and board level. And so on. It would be hugely more informative than a physical panel of blinkenlights and switches.